Valve



April 26, 1927.

VALVE F. H.YHEHEMANN Filed Apri1'4, 192:5

l n l A l IIIJ In!! lllllil' III IIIIIII Il;

llllllllll l! I'III I? Patented Apr. 2e, 1927.

i UNITED STATES 1,626,5321A 'PATENT oFFicEl.)

FREDERICK H. HEHEMANN, OF CINCINNATI, OHIO, ASSIGNOR '.IIO THE LUNKEN-f I i v IIEIMER COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

VALVE.

Application Vinea Aprii 4,

My invention relates to valves provided with renewable valve disks and the objectV of the invention is to provide a simple, cheap Y and effective construction for lockingl in place the plug or member to which thel valve disk is secured. 1

Devices have heretofore been provided to lock renewable'valve disks in place, but such devices have involved extra screw-threaded parts increasing the expense in inanutacture especially in valves ot small sizes, and in certain other constructions lwhere the valve disk and locking device are titted together as a unit, the replacingl ot' the entire unit when the replacement off the 'valve disk becomes necessary on account of wear, increasing the cost of maintenance, all of which is obviated by my` simple and` inexpensive construction. Y

In the drawings: Figure 1 is a central complet-e.

Figure is a detail section of the retaining plug and valve disk. i

,The valve is of the ordinary typ-e Vtamiliarly known as a Globe valve with a renew# able valve -disk in which 1 is the valve casing section oiI the valve with the central partition 9, provided with a' central opening for the valveseat 3, upon which the valve disk sented. The valve disk is loosely secured to the vvalve stein 5, which projects outwardly through the bonnet G, the bonnet being secured over the opening in the casing' by the union bonnet ring 7. The valve stem is provided with screwthreads 8 of large pitch engaging` the threaded recess in the bonnet and the stein is rotated to raiseV and lower the valve by` the usual handvwheel t), the vulve stein being protected from leakage by the usual stutling box 10. This brietiyinvolves kthe ordinary und usual construction of the type oi vulve to which my improvements arev applied.

The lower end ot the valvestem has a annular flange 12 upon which is mounted the plug' 13, which Ais slipped down over the stein before the parts are assen'ible-d. The Yvalve disk is screwed on this plug and thus the vdisk and plugl will be secured loosely on the end 4of the stem. 7 Y

Especially tor small sized valves, it is not easyto provide a simple'method for locking the plug 13 to the valve disk f1 and this I .departing 'from 1923. Serial N0. 629,756.

have accomplished in my present construction by means of a simple lock pin 14. A

hole 15 is bored through thel flange of the plug 13 and extended through the threads of the plug forming a keyway `for the lockpin 14.- lhe corresponding keyway in the valve disk threads is cut by thelockpin when .it is drivenhome after the plug and valve disk are. assembled on the stem and thus securely locking the parts together.y Vith my method any plug may be keyed to any valve disk, which it lits otherwise, and the lockpin' will cut the necessary keyway through the valve diskthreads regardless ot' theposition occupied by the hole 15 after the parts Vare assembled. This provides a very cheap and most etlective method for locking` the plug' and disk together. The hole through the head and thread ofthe plug; serves to hold and support. the pin so that it can bek Although l have, in the present instance,"y

shown and described onlyl one embodiment of the lockingl device, which will give.` in

practice satisfactory and reliable results` itVV is to be understood-that it can be applied to various articles of manufacture without invention.` A Y Having` thus described my invention, what Iciaiin as new and desire'to secure by Let-r Y ters Patent, is tf .In i1. valve construction, the combination with the valve stem, of a rete-ming plug rotatively mounted on said valvestem, said plugand abutting the flanged portion, a lock pin for securing' the plug and the disc together, said plug having an aperture in its upper flanged portion to tightly receive the )in and su i )ort it ae'ainst lateral movement and said aperture extending into the threaded lower portion in the portion thereof adapted to be engaged by the threads of the the 'spirit or scope of the:`

disc whereby the insertion of the lock pin: i o

will cut a groove in the threadsk of the disc.'

FREDERICK H. HEHEMANN., 

